PLEASE HELP! what is this rf signal detector circuit called ?

[telluric42]

Hi,

stumbled across this really simple circuit the other week and can't remember what it was call to look it up again. 

it was a loop of wire with a diode at each end (facing in opposite directions) and these were connected to a LED.

when the loop was put near a radio transmitter the LED lights up to indicated a signal.

i really wish to look into it further so does anyone know what this circuit is called

thanks
T42

[penno64]

Hi Tell,

what you are asking about is an avromenko plug - used to detect rf


Penno

[MrMag]

Yup, that's it.

[telluric42]

thanks heaps!

[Doug1]

Dated 1921